import { codexRecord } from './classes.codexprojection.js';
import { isCodexCreationToken } from './functions.codexidentity.js';
import { isCodexRemoteDirectory, validateCodexServerUrl } from './classes.codexconnectionmodels.js';
import type * as interfaces from '../ts_interfaces/codex.js';

const shape = (valueArg: unknown, requiredArg: string[], optionalArg: string[] = []): Record<string, unknown> => {
  const value = codexRecord(valueArg);
  if (!requiredArg.every(key => Object.hasOwn(value, key)) || Object.keys(value).some(key => !requiredArg.includes(key) && !optionalArg.includes(key))) throw new Error('Invalid Codex connection request.');
  return value;
};
const name = (valueArg: unknown): string => {
  if (typeof valueArg !== 'string' || valueArg.trim() !== valueArg || valueArg.length < 1 || valueArg.length > 128 || /[\u0000-\u001f\u007f]/.test(valueArg)) throw new Error('Use a connection name of 1–128 characters.');
  return valueArg;
};
const token = (valueArg: unknown): string => {
  if (typeof valueArg !== 'string' || !/^[\x21-\x7e]{1,8192}$/.test(valueArg)) throw new Error('Use a token of 1–8192 printable ASCII characters without spaces.');
  return valueArg;
};
const profileId = (valueArg: unknown): string => {
  if (!isCodexCreationToken(valueArg, 32)) throw new Error('Invalid Codex profile identity.');
  return valueArg;
};

export const assertCodexProfileSelection = (valueArg: unknown, requiredArg = false): { profileId?: string } => {
  const value = shape(valueArg, requiredArg ? ['profileId'] : [], requiredArg ? [] : ['profileId']);
  return Object.hasOwn(value, 'profileId') ? { profileId: profileId(value.profileId) } : {};
};
export const assertCodexProfilesList = (valueArg: unknown): { projectId?: string } => {
  const value = shape(valueArg, [], ['projectId']);
  if (Object.hasOwn(value, 'projectId') && !isCodexCreationToken(value.projectId, 16)) throw new Error('Invalid Codex project identity.');
  return value.projectId === undefined ? {} : { projectId: value.projectId as string };
};
export const assertCodexProfileCreate = (valueArg: unknown): interfaces.IReq_ControllerCodexProfileCreate['request'] => {
  const value = shape(valueArg, ['name', 'serverUrl'], ['token']);
  return { name: name(value.name), serverUrl: validateCodexServerUrl(value.serverUrl),
    ...(Object.hasOwn(value, 'token') ? { token: token(value.token) } : {}) };
};
export const assertCodexProfileUpdate = (valueArg: unknown): interfaces.IReq_ControllerCodexProfileUpdate['request'] => {
  const value = shape(valueArg, ['profileId', 'expectedCredentialRevision'], ['name', 'token', 'retire']);
  if (!Number.isSafeInteger(value.expectedCredentialRevision) || Number(value.expectedCredentialRevision) < 0
    || (!Object.hasOwn(value, 'name') && !Object.hasOwn(value, 'token') && !Object.hasOwn(value, 'retire'))
    || (Object.hasOwn(value, 'retire') && value.retire !== true)) throw new Error('Invalid Codex profile change.');
  return { profileId: profileId(value.profileId), expectedCredentialRevision: value.expectedCredentialRevision as number,
    ...(Object.hasOwn(value, 'name') ? { name: name(value.name) } : {}),
    ...(Object.hasOwn(value, 'token') ? { token: value.token === null ? null : token(value.token) } : {}),
    ...(value.retire === true ? { retire: true } : {}) };
};
export const assertCodexMappingUpdate = (valueArg: unknown): interfaces.IControllerCodexProjectMapping => {
  const value = shape(valueArg, ['projectId', 'profileId', 'remoteDirectory']);
  if (!isCodexCreationToken(value.projectId, 16) || !isCodexRemoteDirectory(value.remoteDirectory)) throw new Error('Select a project and an absolute directory on the Codex server.');
  return { projectId: value.projectId, profileId: profileId(value.profileId), remoteDirectory: value.remoteDirectory };
};